Re: IP Prefixes are allocated ..

From: Christopher L. Morrow

Date: Mon Nov 28 01:48:32 2005

On Sun, 27 Nov 2005, Bill Woodcock wrote:
>
> > I tried searching through all the WHOIS records for a domain name. I
> > get the IP address but i dont get the AS number.
> > Any clues on how i can get the AS number?
>
> If you just want this for one thing, not lots, you can just track it down
> by hand. Check to see if the address space is being announced, and if so,
> by what AS. Then check the RIR whois for that AS, and see who it is. If
> it's not being announced, start looking through whois for substring
> matches against likely bits of the name of the owner of the address space.
he might be satisfied with:
mail.pch.net. 86400 IN A 206.220.231.1
:~> host -W 6 -R 10 -t txt 1.231.220.206.asn.routeviews.org
1.231.220.206.asn.routeviews.org text "3856" "206.220.228.0" "22"
which is AS 3856 routing 206.220.228.0/22 ... which contains the /32
above.